Lianja

Read the REST Response Body into a StringBuilder

Demonstrates Rest.ReadRespSb, which reads the response body as text into a StringBuilder, replacing its previous contents.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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llSuccess = .F.

loRest = createobject("CkRest")
llBTls = .T.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("example.com",443,llBTls,llBAutoReconnect)
if (llSuccess = .F.) then
    ? loRest.LastErrorText
    release loRest
    return
endif

llSuccess = loRest.SendReqNoBody("GET","/api/items/123")
if (llSuccess = .F.) then
    ? loRest.LastErrorText
    release loRest
    return
endif

lnStatusCode = loRest.ReadResponseHeader()
if (lnStatusCode < 0) then
    ? loRest.LastErrorText
    release loRest
    return
endif

//  Read the response body as text into a StringBuilder, replacing its previous contents.
loSbResponse = createobject("CkStringBuilder")
llSuccess = loRest.ReadRespSb(loSbResponse)
if (llSuccess = .F.) then
    ? loRest.LastErrorText
    release loRest
    release loSbResponse
    return
endif

lcResponseBody = loSbResponse.GetAsString()
if (loSbResponse.LastMethodSuccess = .F.) then
    ? loSbResponse.LastErrorText
    release loRest
    release loSbResponse
    return
endif

? lcResponseBody


release loRest
release loSbResponse